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Automatic sample injector

An automatic sampling and injection needle technology, applied in the field of mechanical equipment, can solve the problems of low efficiency of chromatographic analysis, and achieve the effect of improving efficiency and reliable and effective clamping

Active Publication Date: 2012-06-27
QINGDAO PUREN INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide an automatic sample injector, to solve the defect that the chromatographic analyzer in the prior art manually injects samples through the injection needle, resulting in low efficiency of chromatographic analysis, and to realize the automatic sampling by the automatic sample injector. Injecting samples into the chromatographic analyzer to improve the efficiency of chromatographic analysis

Method used

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] Such as Figure 1-Figure 12 As shown, the autosampler in this embodiment includes a base turntable device 1, a lifting device 2, a needle tube clamping device 3, a sampling needle 4 and a pump 5; the base turntable device 1 includes a base 15, a first motor 19 and a support plate (not shown), the first motor 19 is arranged in the base 15, ...

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Abstract

The invention provides an automatic sample injector, which comprises a base turntable device, a lifting device, a needle tube clamping device, a sample injection needle and a pump. The base turntable device comprises a base, a first motor and a support disk, wherein the first motor is arranged in the base and connected with the support disk. The lifting device comprises a mounting cover, a sleeve, a second motor, a lead screw and a nut. The needle tube clamping device comprises a holder and a fastener, the sample injection needle is inserted into a clamping open groove, positioned between twoarc grooves and connected with the pump through a guide tube, and the holder is fixedly arranged on a shaft of the nut. The base turntable device can be used for bearing a test tube, and the lifting device drives the needle tube clamping device to move up and down, so that the sample injection needle on the needle tube clamping device is inserted into the corresponding test tube, the pump sucks test fluid through the sample injection needle and can directly deliver the test fluid to a chromatographic analyzer for chromatographic analysis, samples are automatically injected to the chromatographic analyzer by the aid of the automatic sample injector, and chromatographic analysis efficiency is improved.

Description

technical field [0001] The invention relates to mechanical equipment, in particular to an automatic sample injector. Background technique [0002] Chromatographic analyzer is an instrument for qualitative and quantitative analysis of substances by chromatography, and for studying the physical and chemical properties of substances. When performing chromatographic analysis, the operator draws the test solution from the test tube through the injection needle, then inserts the injection needle into the liquid injection port of the chromatographic analyzer, and injects the injection solution into the chromatographic analyzer. Due to the manual injection of the injection solution into the chromatographic analyzer, when it is necessary to inject different test solutions into the chromatographic analyzer, the operator needs to frequently use the injection needle to extract the test solution from different test tubes and inject it into the chromatographic analyzer, resulting in Chr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/00G01N30/24
Inventor 赵丽娟侯倩慧
Owner QINGDAO PUREN INSTR
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